Insurance in Florida: the cost that breaks the monthly math

Almost everyone works out the mortgage (the loan payment on the home) and forgets the insurance. In other states that mistake is cheap. In Florida it is not: here insurance can move your monthly payment enough that the lender approves you for less house than you expected.

Florida is hurricane country. That is priced into every policy (insurance contract) in the state, whether you live on the coast or twenty miles inland. On top of that, two things drive the bill: the age of the roof and the flood zone.

Flood, moreover, is not included in a standard homeowners policy. It is a separate policy. Plenty of people find that out on closing day (the day you sign and get the keys).

The state insurance regulator publishes the average premium (what the insurance costs for a year) for every Florida county twice a year. It is not a quote and it does not tell you what you will pay, but it is the only official figure that exists: it comes from dividing what insurance companies collect by the policies they have active.

Wind coverage (the part of the policy that pays for hurricane wind damage) is what splits the table in two. In Miami-Dade, having it or not is $2,196 a year on a house. In practice you do not get to choose: without it the lender usually will not close.

The most expensive county in Florida is Monroe, the Keys. The cheapest is Sumter, inland, at $2,105. And there is good news almost nobody reports: compared with the January report, the average premium fell in 51 of the 67 counties.

There is no official figure by city or ZIP code anywhere in Florida. Anyone publishing «home insurance in Boca Raton costs X» is calculating, not citing. The finest grain the regulator publishes is the county, and Boca Raton is Palm Beach.

• Roof age. The biggest factor and the most overlooked. A roof fifteen years or older raises the premium, and from there an insurance company can ask you to replace it before giving you the policy. But Florida law lets you pay for an inspection: if an authorized inspector certifies the roof has five years or more of useful life left, they cannot refuse you the policy on age alone.
• Flood zone. Decides whether the lender makes you buy a second policy: in a high-risk zone with a federally backed loan it is required. What it no longer decides is the price: since the federal emergency agency (FEMA) changed its pricing system (Risk Rating 2.0), its flood insurance is priced on the property itself —distance to water, elevation, cost to rebuild— not on the zone letter on the map.
• Year built. The date that counts in Miami-Dade and Broward is September 1994, when the stricter building code that followed Hurricane Andrew took effect; in the rest of Florida it is March 2002, with the Florida Building Code. Homes built after that usually insure cheaper, and the mitigation form insurance companies use (where the protections a home has against wind are recorded) asks for exactly those two dates.
• Windows and protection. Impact-resistant windows or hurricane shutters bring the premium down, meaningfully.

The lender does not look at the mortgage payment alone. It looks at the full payment: principal (the amount you borrowed), interest, taxes, and insurance. That total is what enters your DTI (the share of your monthly income that goes to debt), and DTI has a ceiling of 50%.

Translated: two houses at the same price can produce different answers. If one has a new roof and the other does not, the premium changes, the monthly payment changes, and so does what the bank lets you buy.

Which is why it pays to get an insurance quote while you are still looking, not after the offer is accepted.